Partition joint



June 17, 1941. 1. L. LEWIS 2,246,370

PARTITION JOINT Filed may 10, 1959 INVENTOR Leo L. Lewzls* IBYMQQJATTORNEY Patented june 1 7, 1941 PARTITION JOINT Leo L. Lewis, Syracuse,N. Y; assignor to Carrier Corporation, Syracuse, N. Y., a corporation ofDelaware Application May 10, 1939, Serial No. 272,825 I 1 Claim. (01.285-193) This invention relates to joint construction, and moreparticularly to jointsconnecting adjacent walls, panels, partitionsadjacent sections of duct- Work and the like.

The general object of the invention is to provide an improved method ofand means for joining adjacent partitions, panel or wall sections, andparticularly adjacent sections of ductwork or the like, in such manneras to provide a firm, durable and substantially gas-tight connection.

It is another object of the invention to provide an improved method ofand means for joining adjacent sections of ducts or the like, in amanner both simple and inexpensive.

It is another object of the invention to provide an improved method ofand means for joining adjacent partitions, and particularly ductsections, in such manner that the desired connections may be eifectedquickly and conveniently, by use of materials which may be handled andapplied easily, and without the exercise of any great amount of skill.

It is another object of the invention to provide an air-tight connectionfor adjacent duct sections or the like, which dispenses with the needfor liquid adhesives, felt packings, plastic materials, putty, and thelike, heretofore used to prevent leakage of air or other gas conveyedthrough the ducts.

According to the invention, the duct sections or partitions to be joinedare arranged so that their edge portions abut one against the other, anda strip of flexible material such as metal, faced with suitableadhesive, is arranged to overlie the fissure or line of jointure betweenthe duct sections. The adhesive-faced strip of metal extends throughoutthe line of jointure between the duct sections, and may be continuous ormay be formed of several consecutive strips, if so desired. Applicationof slight pressure to the adhesive metal stripping is sufilcient tocause this sealing strip to adhere to the surfaces of duct sectionswhich it respectively connects.

One or more relatively heavy, rigid bonds are then arranged to overliethe sealing strip and preferably to extend beyond the edges thereof.Through apertures formed in the bonds, suitable machine screws or thelike are inserted and caused to penetrate through the sides of theadjacent duct or partition sections. Tightening of these screws bringsthe relatively heavy and inflexible bonds into contact with the sealingstrip, so that the bonds exert a constant pressure upon the strip toinsure adhesion thereof to th sides of the duct sections. The bonds alsoserve as strong mechanical connections between the adjacent ductsections so that there is no mechanical weakness at the points ofjointure apt to cause sagging or the like, Any number of bonds may beused in accordance with the requirements of particular installations.

Other objects, features and advantages of the invention will be moreapparent from the following description to be read in connection withthe accompanying drawing in which:

Fig. 1 is a view in perspective of a duct having different sectionsthereof joined in accordance with the invention;

Fig. 2 is a fragmentary sectional view taken on the line 2-2 of Fig. 1;

Fig. 3 is a fragmentary view in section of a sealing strip used incarrying out the invention in a preferred form; and

Fig. 4 illustrates a modified form of the invention.

Referring now to the drawing, the numeral 10 designates a duct sectionwhich is to be connected to an adjoining duct section i l. The ductsections H) and i l' are arranged so that the respective side wallsthereof are in abutting relation, the line of jointure between the ductsections as thus disposed being designated I2. After the duct sectionshave been arranged in abutting relationship, a sealing strip i3 isapplied to the duct sections in such manner as to overlie the line ofjointure l2 and the extreme portions of the duct sections Ill and II.The sealing strip I3 preferably comprises a strip of relatively thinflexible material, such as metal, indicated at M in Fig. 3, the innersurface of the strip being provided with a layer of any suitableadhesive material as indicated at 15. The sealing strip I3 is appliedthroughout all sections or sides of the ducts so that the line ofjointure therebetween is completely covered by the sealing strip. Asindicated, a single strip 13 is used, the ends thereof being indicatedas in abutting relationship at It. If desired, of course, the ends ofstrip 13 could be arranged so as to overlie one another through a shortdistance. Also, while a single strip has been indicated in the drawing,it will be apparent that the sealing strip l3 might be sectionalizpd ifdesired. In connecting ducts of relatively large dimensions, the use ofsectionalized sealing strips may be preferred. Due to thepressure-sensitive adhesive inner facing of the sealing strip [3, thestrip l3 may b caused to adhere to the duct sec.- tions by theapplication of slight pressure.

After the sealing strip l3 has been applied to the line of jointure, aplurality of relatively heavy,

strong and inflexible bonds I! are arranged to overlie the sealing stripl3. The ends of the bonds l1 preferably extend beyond the edges of thesealing strip [3. Through suitable apertures l8, formed in the extendingend portions of the bonds [1, are inserted a plurality of. screws or thelike 19, which preferably are of the self-threading type. The screws l9will hold the bonds I! firmly against the sealing strip l3 which, inturn, is held firmly against the duct sections I0 and II.

Any number of bonds I! may be used. These bonds are of sufficientstrength and rigidity so nect the bond I! and the duct sections l0 and Hat points beyond the sides of the strip [3. If desired however, theembodiment of Fig. 4 may be employed, in which case the bolts or screwsI9 will extend through the sealing strip l3.

While the invention has been described with particular reference to theconnection of duct sections, it will be apparent that it may be utilizedto advantage in connecting wall partitions, panels and the like.

Since many changes may be made in the invent ion Without departing fromthe scope thereof,

that when connected in position, preferably on all 7 sides of the duct,they serve to provide a strong mechanical connection between the ductsections and to prevent sagging of the duct at the joint; Rigidity atthe line of jointure, as insured by the provision of bonds I1, isimportant to prevent separation and sagging of the duct sections at theline of jointure.

The sealing strip l3, being flexible and adhesive, serves to prevent anyleakage of air or gas throughout the line of jointure.

In the preferred embodiment of thelinvention illustrated in Fig. 2, thebolts or screws [9 conit is intended that all mattter set forth in theabove description, or shown in the accompanying f raw ng pe regarded asillustrative only and not in a limiting sense.

I claim;

A bonding and sealing means for adjacent duct sections comprising a bandof flexible metal and an adhesive material on the inner surface of saidband and adhered thereto, and a plurality of clamping strips runningcross-wise of said band and fastened to the adjacent duct sections onopposite sides of the line of jointure.

LEO L. LEWIS.

